Finding the Fourth Proportional to 52.86, 72.94 and 34.42

Step by Step Solution

1. Step 1: Write the proportion equation
   52.86 : 72.94 = 34.42 : x
2. Step 2: Convert to fraction form
   52.86/72.94 = 34.42/x
3. Step 3: Cross multiply
   52.86x = 72.94 × 34.42
4. Step 4: Simplify right side
   52.86x = 2,510.59
5. Step 5: Solve for x
   x = 2,510.59/52.86
6. Step 6: Final answer
   x = 47.50